For his birthday, Fofì gives his brother Dedo a mysterious slot car, which has only one rule to follow.

Grandma Bine and her two grandchildren are searching for the Mysterious Island, which, according to legend, becomes visible only under certain weather conditions: when it rains, when it snows, and when the sun shines.

Bloom is back home on her first school break, but the weird dreams she was having at Alfea have come with her. These dreams are trying to tell her something important.